Editing Serial Line Internet Protocol (section)

==Description==

{| class="wikitable"
|-
! Hex value !! Dec Value !! Oct Value !! Abbreviation !! Description
|-
| 0xC0 || 192 || 300||  END || Frame End
|-
| 0xDB || 219 || 333 || ESC || Frame Escape
|-
| 0xDC || 220 || 334 || ESC_END || Transposed Frame End
|-
| 0xDD || 221 || 335 || ESC_ESC || Transposed Frame Escape
|}

SLIP modifies a standard [[TCP/IP]] [[datagram]] by:

* appending a special "END" [[byte]] to it, which distinguishes datagram boundaries in the byte stream,
* if the END byte occurs in the data to be sent, the two byte sequence ESC, ESC_END is sent instead,
* if the ESC byte occurs in the data, the two byte sequence ESC, ESC_ESC is sent.
* variants of the protocol may begin, as well as end, packets with END.

SLIP requires a serial port [[computer configuration|configuration]] of 8 [[data]] [[bit]]s, no [[parity bit|parity]], and either [[Electronic Industries Alliance|EIA]] hardware [[flow control (data)|flow control]], or CLOCAL mode (3-wire [[null-modem]]) [[UART]] operation settings.

SLIP does not provide [[error detection]], being reliant on [[upper layer protocol]]s for this. Therefore, SLIP on its own is not satisfactory over a link which is error-prone, such as a poor quality [[dial-up]] connection.

SLIP escape characters were also required on some modem connections to escape [[Hayes command set]], allowing therefore to pass binary data through those modems that would recognize some characters as commands.